Screw reverse valve mechanism for locomotives.



K. RUSl-ITQN. spnEw REVERSE VALVE mcmnusm FOR Locomonvas;

APPLICATION FILED nc .a. 191s.

i Patented Apr. 3, 1917.

'2 sums-sum I.

K.RUSBTUN, SCREW REVRSE VALVE MECHANISM FOR LOQOMOTWES,

AHLICATION HLED. DEC. 8,1915- I I. 1,221,604. Patented Apr. 3, 1911.

, 2 SBEET3-5HEET KENNETH RUSHTON, OI PHILADELPHI IA, PENNSYLVANIA, ABSIGII'OB TO THE BALDWIN n'ocouo-rwn wonxs, or rmnumnrms,

PENNSYLVANIA.

PENNSYLVANIA, A GORPOBATIQN 01 SCREW REVERSE VALVE MECHANISM FOB LOCOM J'IIVES.

Specification 0! Letters Intent.

. r mmed Apr. 3, 1917.

Application filed December a, 1915. serial No. 65,792.

To all whom it may concern:

Be it known that-. 1, KENNETH Rosmon, a citizen of the United Eitates, residing in Ph'iladel hia, Pennsylvania, have invented certain I I'nprovements in Screw Reverse Valve Mechanism forqiocomotives, of which the following is a specification.

This invention relates to certain improve ments in screw reverse valve mechanism for locomotives for which a patent was' granted to me on the sixth day of July, 1915, No.

One object of the )resent invention is to provide .meanS where y the reverse gear can be turned by hand in the event of an accidentto the power mechanism.

Another" obj ect; of the invention is to provide an indicator which can be arranged in front of the operator so as to indicate the travel of the screw on the shaft.

' In the accompanying drawings-L Figure 1 is a side view of my improved screw. reverse gear showing the power mechanism coupled thereto;

Fig. 2 'is a plan view of Fi 1';

Fig. 3 is a side view, simi ar to one portion of- Fig. .1, showing the hand operating mechanism;

Fig. iiis a'plan view of Fig. 3;

Fig. 5 ispaln end view;

Fig. 6 is 31- sectional view on the line v-a, Fig. 3-

the o crating handled shaft.-

Beiorring to the drawings, 1 is the'frame arranged to be secured in any-'suitable manner to the locomotive structure. 2, 3, and 4 40, nut which sopnnected to the operating rod Ti'vhich, in turn, is connected fi e h e 8 a pr je t g I is an arnh 9 carrying a segmentlll. i a hand pivoted atli' andhav-ing a toothed segmental portion are bearingsgfor the screw shaft 5. 6 is the t0 the reverse mechanism of the-locomotive.- The hearing '4 ispartof the housing forthe motor 12.

On the end of the-screw shaft "5 is cut a from the frame 11 is 1-1 meshing with the screw thread 8 so is turned the handwill indicatethe location of the nut that the nutis some distance from the en- 'ginecrs station the cab'and by locating I is a'perspective view of the swingin? aring,-and

*ig. 8 is adetaehedperspect1ve view of ii-rat .as the screw shaft 5 6,-1as' it willbe understood.

the segment. and hand at the 'engineers s'ta.

..tion he can accurately adjust the nut on the screw shaft. v 12 1S3. motor, in the present instance, an

air controlled motor, which is firmly-se cured to the frame 1. and carries a bearin 13 for the motonshaft 14, the rear end 0 this shaft being also carried by 'abearing 15 secured to the frame of the machine. Mounted on the screw shaftf5' at the bean. .1ng 41s a swinging searing 16, one arm 17 extending on one end of the bearingi and the other at the, opposite end, as clearly shown in the drawings. This swinging bearing 16 carries a shaft 18 having-a pinion 19 at one end and preferably squared and having atthe other end a 'uaredportion- 20. The pinion 19 nieshes wit a gear wheel ,21"s ecured to the screw shaft 5.. Ada ,ted

to slide on the shaft 14 is a coupling; s eeve 22 having a-portiorishaped to enga the squaredportion 20' of the shaft18 w on in its projected 1 and 2. Back of-this-couplingis a sprmg 23 which tends to hold the coupling in engagement'with the shaft 18 so that when motion is imparted from the motor 'to the shaft 14' it is trans: oitted through the. cou-- pling-22, shaft 18,pinion19, and gear 21 to the screw shaft 5 so that as the shaft is turned the nut 6 will travel thereon and will operate the reverse mechanism. On the'swinging aeai'ingisa'centralperforated .pro ection iltandzof the bearing 4 position, as illustrated in are "two perforated lugs 25 and 26: When the parts .are-in the position illustrated in Figs. 1 and Q and'ihemeehanismis driven by the-nwtor, a bolt 27 secures the swinging bearing 16 to the lug 25, but ini'the event.

of an accident hep pening io the motor or 1 to the mechanlsm directly connected there wit and it is desired toturnthe. screw, by

han then the bolt 27 is, removed-andthe d coupling 22, is with irawn from engagement with the end 20. of the shaft. 18, and the swinging bearing-i;

remainingin mesh with the gear.

turnedto the position illustratedin Fig. {,the pinion on the shaft Anoperatingush ft 281B 'then mounted on the machine. This shaft has a squared socket 29 whic is coupled to the end 200i th Shaft 8 an his a bearing 15? which is I.

secured by af-b'olt 15? to the bearing 15, as

illustrated in Fig. 8. Onthis shaft is a handieB O and on turning this handle motion will be imparted-to the screw shaft 5 through the shaft 28, coupling 29, shaft 18, pinion 19 and gear wheel 21.

On the shaft 28, directly back of the bandle," isa notched disk 31 in the present instance, and on' the bearing l5 is it pivoted pawl 32 held in either of its two, positions by a spring 33, so that when turned'to shift the nut-Q6 it can be locked by the pawl'32 In some instances the bearing 15 may forni an integral portion of the bearing 15 and may have a socket adapted to receive theihalidled shaft.

It will be seen, by'the above arrangement, that the screwi'everse gear can be driven'by power. or by :hand, as desired.

, lcla mz 1. The combination in a reverse gear for .1ocon1otives,-of--a shaft for controllim, the

reverse mechanism; a motor; a shaft driven thereby; a hand operated shaft; an intermediate shaft; and a swinging bearing for said intermediate shaft arranged".-to' be brought, in line .With either the motor driven shaft 1 the hand shaft.

the swinging bearing;

the shaft is enga ging the notched disk.

by hand.

the reverse mechanism; a bearing for the shaft having tw-o'lugs thereon; a swinging bearing mounted on thescrew shaftat said bearing; an intermediate shaft carried by a pinion on said intermediate shaft: a

mediate shaft carried thereby and arranged to be shifted either in line with the power driven shaft or the hand operated shaft and to be colipio'd'to eithershaft so that in the event of. an accldent to the power in'echan'isrn the reverse mechanism can be operated 7 KENNETH RUSHTON.

gear wheel on the screw shaft with winch the umen meshes a'per 

